mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-23 10:37:09 -05:00
52 lines
865 B
Go
52 lines
865 B
Go
package user
|
|
|
|
import (
|
|
"crypto/hmac"
|
|
"crypto/md5"
|
|
)
|
|
|
|
type CounterHash interface {
|
|
Hash(key []byte, counter int64) []byte
|
|
}
|
|
|
|
type StringHash interface {
|
|
Hash(key []byte, data []byte) []byte
|
|
}
|
|
|
|
type TimeHash struct {
|
|
baseHash StringHash
|
|
}
|
|
|
|
func NewTimeHash(baseHash StringHash) CounterHash {
|
|
return TimeHash{
|
|
baseHash: baseHash,
|
|
}
|
|
}
|
|
|
|
func (h TimeHash) Hash(key []byte, counter int64) []byte {
|
|
counterBytes := int64ToBytes(counter)
|
|
return h.baseHash.Hash(key, counterBytes)
|
|
}
|
|
|
|
type HMACHash struct {
|
|
}
|
|
|
|
func (h HMACHash) Hash(key []byte, data []byte) []byte {
|
|
hash := hmac.New(md5.New, key)
|
|
hash.Write(data)
|
|
return hash.Sum(nil)
|
|
}
|
|
|
|
func int64ToBytes(value int64) []byte {
|
|
return []byte{
|
|
byte(value >> 56),
|
|
byte(value >> 48),
|
|
byte(value >> 40),
|
|
byte(value >> 32),
|
|
byte(value >> 24),
|
|
byte(value >> 16),
|
|
byte(value >> 8),
|
|
byte(value),
|
|
}
|
|
}
|